diff -urN linux.old/include/linux/netfilter_ipv4/ipt_multiport.h linux.dev/include/linux/netfilter_ipv4/ipt_multiport.h
--- linux.old/include/linux/netfilter_ipv4/ipt_multiport.h 2000-12-11 22:31:30.000000000 +0100
-+++ linux.dev/include/linux/netfilter_ipv4/ipt_multiport.h 2006-02-04 05:05:51.928476750 +0100
-@@ -18,4 +18,13 @@
++++ linux.dev/include/linux/netfilter_ipv4/ipt_multiport.h 2006-02-04 05:23:54.318518250 +0100
+@@ -11,11 +11,12 @@
+
+ #define IPT_MULTI_PORTS 15
+
+-/* Must fit inside union ipt_matchinfo: 16 bytes */
+-struct ipt_multiport
++struct ipt_multiport_v1
+ {
+ u_int8_t flags; /* Type of comparison */
u_int8_t count; /* Number of ports */
u_int16_t ports[IPT_MULTI_PORTS]; /* Ports */
- };
-+
-+struct ipt_multiport_v1
-+{
-+ u_int8_t flags; /* Type of comparison */
-+ u_int8_t count; /* Number of ports */
-+ u_int16_t ports[IPT_MULTI_PORTS]; /* Ports */
+ u_int8_t pflags[IPT_MULTI_PORTS]; /* Port flags */
+ u_int8_t invert; /* Invert flag */
-+};
+ };
#endif /*_IPT_MULTIPORT_H*/
diff -urN linux.old/net/ipv4/netfilter/ipt_multiport.c linux.dev/net/ipv4/netfilter/ipt_multiport.c
--- linux.old/net/ipv4/netfilter/ipt_multiport.c 2003-06-13 16:51:39.000000000 +0200
-+++ linux.dev/net/ipv4/netfilter/ipt_multiport.c 2006-02-04 05:05:03.701462750 +0100
++++ linux.dev/net/ipv4/netfilter/ipt_multiport.c 2006-02-04 05:34:27.362081000 +0100
@@ -1,5 +1,14 @@
/* Kernel module to match one of a list of TCP/UDP ports: ports are in
the same place so we can treat them as equal. */
#include <linux/module.h>
#include <linux/types.h>
#include <linux/udp.h>
-@@ -8,6 +17,10 @@
+@@ -8,97 +17,136 @@
#include <linux/netfilter_ipv4/ipt_multiport.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#if 0
#define duprintf(format, args...) printk(format , ## args)
#else
-@@ -33,34 +46,109 @@
- return 0;
- }
+ #define duprintf(format, args...)
+ #endif
-+/* Returns 1 if the port is matched by the test, 0 otherwise. */
-+static inline int
++/* from linux 2.6 skbuff.h */
++static inline void *skb_header_pointer(const struct sk_buff *skb, int offset,
++ int len, void *buffer)
++{
++ int hlen = skb_headlen(skb);
++
++ if (hlen - offset >= len)
++ return skb->data + offset;
++
++ if (skb_copy_bits(skb, offset, buffer, len) < 0)
++ return NULL;
++
++ return buffer;
++}
++
++
+ /* Returns 1 if the port is matched by the test, 0 otherwise. */
+ static inline int
+-ports_match(const u_int16_t *portlist, enum ipt_multiport_flags flags,
+- u_int8_t count, u_int16_t src, u_int16_t dst)
+ports_match_v1(const struct ipt_multiport_v1 *minfo,
+ u_int16_t src, u_int16_t dst)
-+{
-+ unsigned int i;
+ {
+ unsigned int i;
+- for (i=0; i<count; i++) {
+- if (flags != IPT_MULTIPORT_DESTINATION
+- && portlist[i] == src)
+- return 1;
+-
+- if (flags != IPT_MULTIPORT_SOURCE
+- && portlist[i] == dst)
+- return 1;
+- }
+ u_int16_t s, e;
-+
+
+- return 0;
+ for (i=0; i < minfo->count; i++) {
+ s = minfo->ports[i];
+
+ }
+
+ return minfo->invert;
-+}
-+
+ }
+
static int
- match(const struct sk_buff *skb,
- const struct net_device *in,
- const struct net_device *out,
- const void *matchinfo,
- int offset,
+-match(const struct sk_buff *skb,
+- const struct net_device *in,
+- const struct net_device *out,
+- const void *matchinfo,
+- int offset,
- const void *hdr,
- u_int16_t datalen,
- int *hotdrop)
+- int *hotdrop)
++match_v1(const struct sk_buff *skb,
++ const struct net_device *in,
++ const struct net_device *out,
++ const void *matchinfo,
++ int offset,
++ int *hotdrop)
{
- const struct udphdr *udp = hdr;
+- const struct ipt_multiport *multiinfo = matchinfo;
+ u16 _ports[2], *pptr;
- const struct ipt_multiport *multiinfo = matchinfo;
++ const struct ipt_multiport_v1 *multiinfo = matchinfo;
++
++ if (offset)
++ return 0;
- /* Must be big enough to read ports. */
- if (offset == 0 && datalen < sizeof(struct udphdr)) {
-+ if (offset)
-+ return 0;
-+
+ pptr = skb_header_pointer(skb, skb->nh.iph->ihl * 4,
+ sizeof(_ports), _ports);
+ if (pptr == NULL) {
- && ports_match(multiinfo->ports,
- multiinfo->flags, multiinfo->count,
- ntohs(udp->source), ntohs(udp->dest));
-+ return ports_match(multiinfo->ports,
-+ multiinfo->flags, multiinfo->count,
-+ ntohs(pptr[0]), ntohs(pptr[1]));
-+}
-+
-+static int
-+match_v1(const struct sk_buff *skb,
-+ const struct net_device *in,
-+ const struct net_device *out,
-+ const void *matchinfo,
-+ int offset,
-+ int *hotdrop)
-+{
-+ u16 _ports[2], *pptr;
-+ const struct ipt_multiport_v1 *multiinfo = matchinfo;
-+
-+ if (offset)
-+ return 0;
-+
-+ pptr = skb_header_pointer(skb, skb->nh.iph->ihl * 4,
-+ sizeof(_ports), _ports);
-+ if (pptr == NULL) {
-+ /* We've been asked to examine this packet, and we
-+ * can't. Hence, no choice but to drop.
-+ */
-+ duprintf("ipt_multiport:"
-+ " Dropping evil offset=0 tinygram.\n");
-+ *hotdrop = 1;
-+ return 0;
-+ }
-+
+ return ports_match_v1(multiinfo, ntohs(pptr[0]), ntohs(pptr[1]));
}
- /* Called when user tries to insert an entry of this type. */
-@@ -71,34 +159,54 @@
- unsigned int matchsize,
- unsigned int hook_mask)
+-/* Called when user tries to insert an entry of this type. */
+ static int
+-checkentry(const char *tablename,
+- const struct ipt_ip *ip,
+- void *matchinfo,
+- unsigned int matchsize,
+- unsigned int hook_mask)
++checkentry_v1(const char *tablename,
++ const struct ipt_ip *ip,
++ void *matchinfo,
++ unsigned int matchsize,
++ unsigned int hook_mask)
{
- const struct ipt_multiport *multiinfo = matchinfo;
-
- if (matchsize != IPT_ALIGN(sizeof(struct ipt_multiport)))
- return 0;
-+ return (matchsize == IPT_ALIGN(sizeof(struct ipt_multiport)));
-+}
-
+-
- /* Must specify proto == TCP/UDP, no unknown flags or bad count */
- return (ip->proto == IPPROTO_TCP || ip->proto == IPPROTO_UDP)
- && !(ip->invflags & IPT_INV_PROTO)
- || multiinfo->flags == IPT_MULTIPORT_DESTINATION
- || multiinfo->flags == IPT_MULTIPORT_EITHER)
- && multiinfo->count <= IPT_MULTI_PORTS;
-+static int
-+checkentry_v1(const char *tablename,
-+ const struct ipt_ip *ip,
-+ void *matchinfo,
-+ unsigned int matchsize,
-+ unsigned int hook_mask)
-+{
+ return (matchsize == IPT_ALIGN(sizeof(struct ipt_multiport_v1)));
}
-static struct ipt_match multiport_match
-= { { NULL, NULL }, "multiport", &match, &checkentry, NULL, THIS_MODULE };
-+static struct ipt_match multiport_match = {
-+ .name = "multiport",
-+ .revision = 0,
-+ .match = &match,
-+ .checkentry = &checkentry,
-+ .me = THIS_MODULE,
-+};
-+
+static struct ipt_match multiport_match_v1 = {
+ .name = "multiport",
-+ .revision = 1,
+ .match = &match_v1,
+ .checkentry = &checkentry_v1,
+ .me = THIS_MODULE,
- return ipt_register_match(&multiport_match);
+ int err;
+
-+ err = ipt_register_match(&multiport_match);
-+ if (!err) {
-+ err = ipt_register_match(&multiport_match_v1);
-+ if (err)
-+ ipt_unregister_match(&multiport_match);
-+ }
++ err = ipt_register_match(&multiport_match_v1);
+
+ return err;
}
static void __exit fini(void)
{
- ipt_unregister_match(&multiport_match);
+- ipt_unregister_match(&multiport_match);
+ ipt_unregister_match(&multiport_match_v1);
}
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